Hibiscus sturtii var. truncatus Fryxell

Scientific Description

Shrub or tree, with hairy stems. Leaves 25-45 mm long, 13-27 mm wide, not lobed; margins crenate; hairy, with stellate hairswith scales absent, Sessile glands absent; stipules present and persistent to older leaves or present but early deciduous (only visible on youngest leaves), 12-15 mm long. Perianth clearly of two whorls (calyx and corolla), the corolla obvious and prominent. Pedicel present, 20-30 mm long; indumentum present, with stellate hairs present, with scales absent. Epicalyx (extra segments or 'bracteoles' immediately below the calyx) present, 5-6 mm long, the lobes fused half or more of their length, indumentum present, stellate hairs presentwith scales absent, Sessile glands absent. Calyx green, 12-14 mm long, the lobes fused less than half their length, Sessile glands absent, simple hairs (without tubercle bases) absent, stellate hairs present, tubercle-based simple hairs absent, gland-tipped hairs absent, scales absent, Terminal appendages absent, number of ribs absent. Corolla pink, blue or purple, 34-46 mm long, hairs or scales present, simple hairs (without tubercle bases) absent, stellate hairs present, tubercle-based simple hairs absent, gland-tipped hairs absent, scales absent. Indumentum (outside) Sessile glands absent. Stamens many, united and arising from a staminal tube around the style; filaments present, 2.6-4.2 mm long; anthers 0.5-0.7 mm long, indumentum absent (anthers glabrous). Staminodes absent, appendages absent. Ovary hairs and scales absent (ovary quite glabrous); style 1, 11-16 mm long, with five style branches or lobes, mostly glabrous, wing absent. Fruits dehiscent (capsules and follicles), length-width ratio more or less as long as wide, hairs or scales present, simple hairs (without tubercle bases) present, stellate hairs absent, Sessile glands absent, tubercle-based simple hairs absent, gland-tipped hairs absent, scales absent; apex rounded; prickles absent (except perhaps a terminal awn); terminal awns or spines absent; calyx persistent to mature fruit; carpels 5; seeds per loculus 2-4. Flowering time February, April, July, August, September, October or November. Distribution Botanical Province Eremaean, IBRA Bioregion Pilbara, Carnarvon, Gascoyne, Little Sandy Desert, Gibson Desert, Central Ranges, Yalgoo, Murchison, Great Victorian Desert and Coolgardie.